Answer:
I make a loud noise when changing jacket. I become bigger and delicious.
Never ahead, ever behind, yet flying swiftly past, for a child, I last forever, for adults, I'm gone too fast.
I am there when you sit, but gone when you stand. What am I?
I'm an animal. I love marching. I always wear a tuxedo. What am I?
I have a frame but no pictures. I have poles but not standing up. What am I?
No matter how little or how much you use me, you change me every month.